CN214394562U

CN214394562U - Joinery band saw machine

Info

Publication number: CN214394562U
Application number: CN202023346724.1U
Authority: CN
Inventors: 黄忠明
Original assignee: Jiangmen Diwei Furniture Co ltd
Current assignee: Jiangmen Diwei Furniture Co ltd
Priority date: 2020-12-31
Filing date: 2020-12-31
Publication date: 2021-10-15
Anticipated expiration: 2030-12-31

Abstract

The utility model discloses a joinery band saw machine, include: the band saw comprises a rack, a band saw blade, a tensioning transmission device, a tensioning power device and a tensioning control device, wherein a driving wheel and a driven wheel with adjustable wheelbase are arranged on the rack; the band saw blade is wound on the outer sides of the driving wheel and the driven wheel and used for sawing and cutting wood; the tensioning transmission device comprises a sleeve, a spring and a screw rod, wherein the spring is arranged in the sleeve, and the screw rod can vertically extend into the sleeve from the lower end of the sleeve to compress the spring; the tensioning power device can drive the screw rod to move up and down; the tension control device is used for adjusting the degree of compression of the spring by the screw rod. The screw rod is driven by the tensioning power device to compress the spring to provide pressing force for the driven wheel, the stroke of the screw rod is controlled by the tensioning control device to adjust the compression degree of the spring, and the technical effect of conveniently adjusting the tensioning force is achieved.

Description

Joinery band saw machine

Technical Field

The utility model relates to a wood working field especially relates to a joinery band saw machine.

Background

At present, a joinery band saw machine is a common device used in timber processing, and takes a ring-shaped endless band saw blade as a saw tool, and winds on two saw wheels to do unidirectional continuous linear motion to saw and cut timber. The band saw blade is tensioned through the spring type tensioning device, the spring type tensioning device utilizes spring force generated by spring compression to act on the saw wheel shaft to tension the saw blade, the structure is simple, the adjustment is convenient, but the band saw blade is easily broken or the tensioning force is insufficient to enable the band saw blade to slip when the band saw blade is tensioned easily and excessively during manual operation.

SUMMERY OF THE UTILITY MODEL

The utility model discloses aim at solving one of the technical problem that exists among the prior art at least. Therefore, the utility model provides a joinery band saw machine can accurate adjustment band saw blade tensile force, prevents that the band saw blade from breaking and skidding.

According to the utility model discloses a joinery band saw machine of first aspect embodiment, include: the band saw comprises a rack, a band saw blade, a tensioning transmission device, a tensioning power device and a tensioning control device, wherein a driving wheel and a driven wheel with adjustable wheelbase are arranged on the rack; the band saw blade is wound on the outer sides of the driving wheel and the driven wheel and used for sawing and cutting wood; the tensioning transmission device comprises a sleeve, a spring and a screw rod, wherein a wheel shaft penetrates through the center of the driven wheel, the sleeve is connected with the wheel shaft, the spring is arranged in the sleeve, and the screw rod can vertically extend into the sleeve from the lower end of the sleeve to compress the spring; the tensioning power device can drive the screw rod to move up and down; and when the screw rod moves to contact with the tensioning control device, the tensioning power device is stopped, and the degree of compression of the spring by the screw rod is adjusted.

According to the utility model discloses joinery band saw machine has following technological effect at least: the embodiment of the utility model provides a pair of joinery band saw machine comes compression spring through tensioning power device drive screw and provides the packing force to following the driving wheel, utilizes tensioning control device control screw's stroke, limits the compression degree of spring, has realized the technological effect of automatic tensioning band saw blade, and easy tensioning force is not enough and too big shortcoming when having overcome spring overspeed device tensioner manual regulation has improved work efficiency.

According to some embodiments of the utility model, the sleeve upper end is connected with the support, the support upper end with from the driving wheel the shaft links to each other.

According to some embodiments of the invention, the tension control device comprises: thimble, switch positioning mechanism, limit switch, thimble lower extreme fixed connection be in the screw rod upper end, the thimble upper end is passed the sleeve with the support, the thimble can follow the screw rod is movable from top to bottom, the connection can be dismantled to switch positioning mechanism is in the support, limit switch connects on the switch positioning mechanism, switch positioning mechanism is used for control limit switch's position, the thimble can trigger limit switch so that tensioning power device stops the activity.

According to the utility model discloses a some embodiments, tensioning power device includes motor, control gear, axle sleeve, the motor is installed in the frame, the control gear with motor drive links to each other, the axle sleeve cover is established on the screw rod to through threaded connection, the axle sleeve with control gear drive links to each other, can drive when the axle sleeve is rotatory the screw rod is movable from top to bottom.

According to some embodiments of the utility model, be equipped with the boss in the frame, the control gear with the axle sleeve embedding in the boss, the boss is used for the restriction the control gear with the upper and lower activity of axle sleeve.

According to some embodiments of the utility model, be equipped with the spout along the axial on the screw rod, be equipped with on the boss with the slider that the spout corresponds, the spout with slider cooperation restriction the screw rod is rotatory around self axis.

According to the utility model discloses a some embodiments, switch positioning mechanism includes bracing piece and nut, two nut threaded connection is in on the bracing piece, be equipped with the rectangular shape hole on the support for the bracing piece passes, the bracing piece can be installed the different positions in rectangular shape hole are in order to be used for the adjustment limit switch's upper and lower position, two the nut is used for with the bracing piece is fixed on the support.

According to some embodiments of the utility model, a plurality of stoppers of fixedly connected with in the frame, the stopper with the support outside offsets in order to be used for spacingly the support makes the support can only move about from top to bottom.

According to the utility model discloses a some embodiments, be equipped with the scale in the vertical direction of rectangular shape downthehole wall to in accurate adjustment the position of the upper and lower direction of bracing piece.

Additional aspects and advantages of the invention will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the invention.

Drawings

The present invention will be further explained with reference to the drawings and examples.

Fig. 1 is a schematic view of an installation structure of an embodiment of the present invention;

FIG. 2 is a schematic view of a tensioning drive and a tensioning power plant of an embodiment of the present invention;

fig. 3 is a schematic view of a tension control device according to an embodiment of the present invention.

Reference numerals:

100 frames, 110 driving wheels, 120 driven wheels, 121 wheel shafts, 130 limit blocks, 140 bosses and 141 sliders;

200 band saw blades;

300 tensioning transmission device, 310 bracket, 311 sleeve, 312 elongated hole, 320 spring, 330 screw rod, 331 sliding groove;

400 tensioning power device, 410 motor, 420 control gear, 430 shaft sleeve;

500 tensioning control devices, 510 thimbles, 520 switch positioning mechanisms, 521 supporting rods, 522 nuts and 530 limit switches.

Detailed Description

Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are exemplary only for the purpose of explaining the present invention, and should not be construed as limiting the present invention.

In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "axial", "radial", "circumferential", and the like indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of description and simplicity of description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore should not be construed as limiting the present invention. Furthermore, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless otherwise specified.

In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.

Referring to fig. 1 to 3, the utility model discloses a joinery band saw machine, include: a frame 100, a band saw blade 200, a tension transmission device 300, a tension power device 400 and a tension control device 500. A driving wheel 110 and a driven wheel 120 with adjustable wheel base are rotatably arranged on the frame 100; the driving pulley 110 is disposed below the driven pulley 120. The band saw blade 200 is a ring-shaped endless band, the band saw blade 200 is wound outside the driving wheel 110 and the driven wheel 120, and the band saw blade 200 continuously moves along with the driving wheel 110 and the driven wheel to be used for sawing wood; the tension drive 300 includes a sleeve 311, a spring 320, and a screw 330. The driven wheel 120 is provided with a wheel shaft 121 in the center, a sleeve 311 is connected with the wheel shaft 121, and a spring 320 is hung in the sleeve 311. The screw 330 can vertically extend into the sleeve 311 from the lower end of the sleeve 311 to compress the spring 320; the spring 320 is compressed to transmit the pressure to the sleeve 311, the sleeve 311 drives the wheel shaft 121 to move upwards to enable the driven wheel 120 to tension the band saw blade 200, and the tension power device 400 can drive the screw 330 to move up and down. The screw 330 compresses the spring 320 to a different extent, and the spring 320 exerts a different pressure on the sleeve 311. The tensioning power means 400 is stopped when the screw 330 moves to contact the tensioning control means 500 for adjusting the extent to which the screw 330 compresses the spring 320.

The utility model provides a pair of joinery band saw machine, compression spring that moves up through tensioning power device drive screw provides the packing force to following the driving wheel, utilizes tensioning control device to control the stroke that tensioning power device drive screw moved up, control spring's compression degree to the effort of regulating spring 320 to arbor 121 has realized the technological effect of automatically regulated tensile force. The operation process of adjusting the tension force is simplified, the excessive tension force and the undersize tension force caused by manual adjustment are avoided, and the working efficiency is improved.

In some embodiments of the present invention, a bracket 310 is connected to the upper end of the sleeve 311, and the upper end of the bracket 310 is connected to the axle 121 of the driven wheel 120. The brackets 310 are vertically arranged on both sides of the driven wheel 120, and can drive the driven wheel 120 to move up and down. The support 310 makes the driven wheel 120 stressed more evenly, and the movement is not off tracking.

In some embodiments of the present invention, the tension control device 500 includes: the lower end of the thimble 510 is welded to the upper end of the screw 330, the upper end of the thimble 510 passes through the sleeve 311 and the support 310 and can move up and down, so the thimble 510 can move up and down along with the screw 330, the switch positioning mechanism 520 is detachably connected to the support 310, the limit switch 530 is connected to one end of the switch positioning mechanism 520, the limit switch 530 is located on the moving path of the thimble 510, the limit switch 530 is electrically connected with the tensioning power device 400, the switch positioning mechanism 520 is used for positioning the position of the limit switch 530, when the thimble 510 moves up to trigger the limit switch 530, the limit switch 530 sends a signal to stop the tensioning power device 400 from moving, the maximum pressure of the spring 320 can be limited, and the band saw blade 200 is prevented from being damaged due to overlarge pressure.

In some embodiments of the present invention, the tensioning power device 400 includes a motor 410, a control gear 420, and a shaft sleeve 430, the motor 410 is connected to the frame 100 through a bolt, the control gear 420 is coaxial with the motor 410 and is connected to the transmission, the shaft sleeve 430 is sleeved on the screw 330 and is connected to the control gear 420 through a thread, the shaft sleeve 430 is connected to the control gear 420 through a transmission, the upper end of the screw 330 is square, the sleeve 311 limits the screw 330 to rotate around its axis, so that the screw 330 can be driven to move up and down when the shaft sleeve 430 rotates. When the motor 410 rotates, the control gear 420 is driven to rotate, the control gear 420 drives the shaft sleeve 430 to rotate, and the shaft sleeve 430 drives the screw 330 to move up and down to compress the spring 320.

The utility model discloses a some embodiments, the welding has boss 140 in the frame 100, is equipped with the groove in the middle of the boss 140, and control gear 420 and axle sleeve 430 embedded groove in and can follow self axis rotation, boss 140 are used for limiting control gear 420 and axle sleeve 430's upper and lower activity, and boss 140 is more stable when making axle sleeve 430 rotate with control gear 420, can also assist support sleeve 311 and axle sleeve 430 simultaneously.

In some embodiments of the present invention, the screw 330 has a sliding groove 331 along the axial direction, the boss 140 has a sliding block 141 corresponding to the sliding groove 331, and the sliding block 141 is embedded in the sliding groove 331 and can move up and down. The sliding groove 331 is matched with the sliding block 141 to limit the screw 330 to rotate around the axis of the screw, so that the shaft sleeve 430 can drive the screw 330 to move up and down when rotating.

In some embodiments of the utility model, switch positioning mechanism 520 includes bracing piece 521 and nut 522, be equipped with the screw thread on the bracing piece 521, two nut 522 threaded connection are on the bracing piece 521, be equipped with the ascending rectangular shape hole 312 in vertical direction on the support 310 and pass for the bracing piece 521, the bracing piece 521 can be installed in the upper and lower position of the different positions in rectangular shape hole 312 in order to be used for adjusting limit switch 530, thereby adjust the size of tensile force, the diameter of two nuts 522 is greater than the diameter in rectangular shape hole 312, two nuts 522 clip the support 310 and have fixed the bracing piece 521 on the support 310.

The utility model discloses a in some embodiments, the welding has two stopper 130 in order to be used for spacing support 310 on the frame 100, and stopper 130 offsets with the support 310 outside and makes support 310 can only move about, prevents that support 310 skew about the during operation.

In some embodiments of the present invention, the inner wall of the elongated hole 312 is provided with a scale in the vertical direction, so as to accurately adjust the position of the support rod 521 in the up-down direction and read the current tension.

The working process is as follows: adjusting the up-down position of the supporting rod 521, then screwing the nut to fix the supporting rod 521, starting the motor 410, driving the control gear 420 to rotate when the motor 410 rotates, driving the shaft sleeve 430 to rotate by the control gear 420, driving the screw 330 to move up by the shaft sleeve 430 to compress the spring 320, driving the sleeve 311 to move up after the spring 320 is compressed, driving the bracket 310 to move up by the sleeve 311, driving the driven wheel 120 to move up by the bracket 310 to tension the band saw blade 200, when the thimble 510 which is moved up to the upper end of the screw 330 contacts the limit switch 530, the limit switch 530 sends an electric signal to stop the motor 410 from rotating, and at this time, the screw 330 does not move up any more. The screw 330 does not move down by the bushing 430. I.e., the operation step of tensioning the band saw blade 200 is completed. Through the scale that sets up on the long strip hole 312 inner wall, the different upper and lower position of bracing piece 521 can be adjusted to the accuracy, reaches the automatic control tensile force and shows the effect of tensile force size.

In the description herein, references to the description of the term "one embodiment," "some embodiments," "an illustrative embodiment," "an example," "a specific example" or "some examples" or the like mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

While embodiments of the present invention have been shown and described, it will be understood by those of ordinary skill in the art that: various changes, modifications, substitutions and alterations can be made to the embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the claims and their equivalents.

Claims

1. A joinery band saw machine, comprising:

the device comprises a rack (100), wherein a driving wheel (110) and a driven wheel (120) with adjustable wheel bases are arranged on the rack (100);

the band saw blade (200) is wound on the outer sides of the driving wheel (110) and the driven wheel (120) and used for sawing wood;

the tensioning transmission device (300) comprises a sleeve (311), a spring (320) and a screw rod (330), wherein an axle (121) penetrates through the center of the driven wheel (120), the sleeve (311) is connected with the axle (121), the spring (320) is arranged in the sleeve (311), and the screw rod (330) can vertically extend into the sleeve (311) from the lower end of the sleeve (311) to compress the spring (320);

the tensioning power device (400), the tensioning power device (400) can drive the screw rod (330) to move up and down;

a tension control device (500), the screw (330) moving to contact the tension control device (500) to stop the tension power device (400) for limiting the extent to which the screw (330) compresses the spring (320).

2. The joinery band saw machine of claim 1 wherein: the upper end of the sleeve (311) is connected with a bracket (310), and the upper end of the bracket (310) is connected with the wheel shaft (121) of the driven wheel (120).

3. The joinery band saw machine of claim 2 wherein: the tension control device (500) includes: thimble (510), switch positioning mechanism (520), limit switch (530), thimble (510) lower extreme fixed connection be in screw rod (330) upper end, thimble (510) upper end is passed sleeve (311) with support (310), thimble (510) can be followed screw rod (330) is movable from top to bottom, switch positioning mechanism (520) can be dismantled the connection and be in support (310), limit switch (530) are connected on switch positioning mechanism (520), switch positioning mechanism (520) are used for control the position of limit switch (530), thimble (510) can trigger limit switch (530) so that tensioning power device (400) stop the activity.

4. The joinery band saw machine of claim 1 wherein: tensioning power device (400) includes motor (410), control gear (420), axle sleeve (430), motor (410) is installed on frame (100), control gear (420) with motor (410) transmission links to each other, axle sleeve (430) cover is established on screw rod (330) to through threaded connection, axle sleeve (430) with control gear (420) transmission links to each other, axle sleeve (430) can drive when rotatory screw rod (330) are movable from top to bottom.

5. The joinery band saw machine of claim 4 wherein: the rack (100) is provided with a boss (140), the control gear (420) and the shaft sleeve (430) are embedded into the boss (140), and the boss (140) is used for limiting the vertical movement of the control gear (420) and the shaft sleeve (430).

6. The joinery band saw machine of claim 5 wherein: the screw rod (330) is provided with a sliding groove (331) along the axial direction, the boss (140) is provided with a sliding block (141) corresponding to the sliding groove (331), and the sliding groove (331) and the sliding block (141) are matched to limit the screw rod (330) to rotate around the axis of the screw rod.

7. A joinery band saw machine according to claim 3 wherein: the switch positioning mechanism (520) comprises a supporting rod (521) and nuts (522), the two nuts (522) are in threaded connection with the supporting rod (521), a strip-shaped hole (312) is formed in the support (310) and used for the supporting rod (521) to penetrate through, the supporting rod (521) can be installed at different positions of the strip-shaped hole (312) and used for adjusting the upper position and the lower position of the limit switch (530), and the two nuts (522) are used for fixing the supporting rod (521) on the support (310).

8. The joinery band saw machine of claim 2 wherein: a plurality of limiting blocks (130) are fixedly connected to the rack (100), and the limiting blocks (130) are abutted to the outer side of the support (310) so as to limit the support (310) in a left-right mode.

9. The joinery band saw machine of claim 7 wherein: scales are arranged on the vertical direction of the inner wall of the elongated hole (312) so as to accurately adjust the position of the support rod (521) in the up-down direction.